Why do dogs have such short lifespans?

Lifespan in general is determined by trade-offs between survival and reproduction. Wolves, the ancestors of dogs, can live 15-20 years*, roughly twice as long as comparable-sized dogs. They start breeding in the wild no younger than 2 years. They need to form pairs and establish a territory before breeding. Older wolves will often have help raising their pups from older juveniles who have not managed to mate or find territories. In contrast, most dogs can breed from 6-12 months of age, and they don't benefit from having territories, pair bonds or packs. Whereas wolves breed until they die, dog breeders will usually retire older females. So the whole life history of dogs is shifted to more of a "live-fast-die-young" style compared with wolves.

On top of that, artificial selection and inbreeding have created huge problems for dogs. Here's what dogs look like, when they're not bred to conform to human expectations:


What does love matter in this life?

MARRIAGEWhen I got home that night as my wife served dinner, I held her hand and said, I've got something to tell you. She sat down and ate quietly. Again I observed the hurt in her eyes.Suddenly I didn't know how to open my mouth. But I had to let her know what I was thinking. I want a

What are some examples of how expensive is New York compared to the rest of the United States?

A very tiny apartment can run from $3000.00-$500O.00 easily and that's why so many people have roommates to share the cost. Subway and bus fare is $2.75 Everything else like food, clothing, cafes, restaurants supermarket and furniture is decent because there are so many of these retail stores competing. Night lift is awesome. Clubbing all night, Central Park

What are the best abs and lower back exercises?

Hi there and thanks for your question!Look, in regards to that I would advice of the following:Lower Back:DeadliftsHyperextensionsSwiss Ball Back ExtensionsAlternating Supermans with Swiss BallOf course there are many more but I listed these ones as they are easy to do, don't require a lot of equipement and